Move scroll from x11drv to USER
Dimitrie O. Paun
dpaun at rogers.com
Sat Sep 21 01:29:34 CDT 2002
This patch depends on the previous patch I've sent.
It moves scrolling functions to x11drv to USER.
The X11DRV was dealing with two scroll functions:
ScrollDC
ScrollWindowEx
The first one had no X11DRV dependency, while the second
one can now be implemented in USER directly with the help
of the newly exported {Start,End}GraphicsExposures functions.
Mind you that the driver can still provide functions for
these operations, if it thinks it can do a better job than
the USER. If the driver does not provide an implemention
for these functions, USER will default to its own implementation.
Oh, BTW, you should also do:
cvs rm -f dlls/x11drv/scroll.c
after applying this patch.
ChangeLog
Move scroll from x11drv to USER, and make scrolling functions
optional in a USER driver.
Index: dlls/x11drv/Makefile.in
===================================================================
RCS file: /var/cvs/wine/dlls/x11drv/Makefile.in,v
retrieving revision 1.26
diff -u -r1.26 Makefile.in
--- dlls/x11drv/Makefile.in 6 Sep 2002 18:51:32 -0000 1.26
+++ dlls/x11drv/Makefile.in 21 Sep 2002 05:14:53 -0000
@@ -30,7 +30,6 @@
event.c \
keyboard.c \
mouse.c \
- scroll.c \
window.c \
winpos.c \
x11ddraw.c \
Index: dlls/x11drv/x11drv.spec
===================================================================
RCS file: /var/cvs/wine/dlls/x11drv/x11drv.spec,v
retrieving revision 1.39
diff -u -r1.39 x11drv.spec
--- dlls/x11drv/x11drv.spec 27 Aug 2002 19:19:49 -0000 1.39
+++ dlls/x11drv/x11drv.spec 21 Sep 2002 05:59:48 -0000
@@ -79,8 +79,6 @@
@ cdecl GetDC(long long long long) X11DRV_GetDC
@ cdecl ForceWindowRaise(long) X11DRV_ForceWindowRaise
@ cdecl MsgWaitForMultipleObjectsEx(long ptr long long long) X11DRV_MsgWaitForMultipleObjectsEx
-@ cdecl ScrollDC(long long long ptr ptr long ptr) X11DRV_ScrollDC
-@ cdecl ScrollWindowEx(long long long ptr ptr long ptr long) X11DRV_ScrollWindowEx
@ cdecl SetFocus(long) X11DRV_SetFocus
@ cdecl SetParent(long long) X11DRV_SetParent
@ cdecl SetWindowPos(ptr) X11DRV_SetWindowPos
Index: windows/scroll.c
===================================================================
RCS file: /var/cvs/wine/windows/scroll.c,v
retrieving revision 1.37
diff -u -r1.37 scroll.c
--- windows/scroll.c 20 Sep 2002 19:35:54 -0000 1.37
+++ windows/scroll.c 21 Sep 2002 05:54:49 -0000
@@ -1,8 +1,10 @@
/*
* Scroll windows and DCs
*
- * Copyright David W. Metcalfe, 1993
- * Alex Korobka 1995,1996
+ * Copyright 1993 David W. Metcalfe
+ * Copyright 1995, 1996 Alex Korobka
+ * Copyright 2001 Alexandre Julliard
+ * Copyright 2002 Dimitrie O. Paun
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -95,19 +97,176 @@
/*************************************************************************
+ * USER_ScrollDC [Internal]
+ *
+ * Internal implementation of the ScrollDC function.
+ */
+static BOOL USER_ScrollDC( HDC hdc, INT dx, INT dy, const RECT *rc,
+ const RECT *clipRect, HRGN hrgnUpdate, LPRECT rcUpdate )
+{
+ RECT rect, rClip, rDst;
+
+ /* compute device clipping region (in device coordinates) */
+
+ if (rc) rect = *rc;
+ else GetClipBox( hdc, &rect );
+
+ if (clipRect)
+ {
+ rClip = *clipRect;
+ IntersectRect( &rClip, &rect, &rClip );
+ }
+ else rClip = rect;
+
+ rDst = rClip;
+ OffsetRect( &rDst, dx, dy );
+ IntersectRect( &rDst, &rDst, &rClip );
+
+ if (!IsRectEmpty(&rDst))
+ {
+ /* copy bits */
+ if (!BitBlt( hdc, rDst.left, rDst.top,
+ rDst.right - rDst.left, rDst.bottom - rDst.top,
+ hdc, rDst.left - dx, rDst.top - dy, SRCCOPY))
+ return FALSE;
+ }
+
+ /* compute update areas */
+
+ if (hrgnUpdate || rcUpdate)
+ {
+ HRGN hrgn = hrgnUpdate, hrgn2;
+
+ /* map everything to device coordinates */
+ LPtoDP( hdc, (LPPOINT)&rClip, 2 );
+ LPtoDP( hdc, (LPPOINT)&rDst, 2 );
+
+ hrgn2 = CreateRectRgnIndirect( &rDst );
+ if (hrgn) SetRectRgn( hrgn, rClip.left, rClip.top, rClip.right, rClip.bottom );
+ else hrgn = CreateRectRgn( rClip.left, rClip.top, rClip.right, rClip.bottom );
+ CombineRgn( hrgn, hrgn, hrgn2, RGN_DIFF );
+
+ if( rcUpdate )
+ {
+ GetRgnBox( hrgn, rcUpdate );
+
+ /* Put the rcUpdate in logical coordinate */
+ DPtoLP( hdc, (LPPOINT)rcUpdate, 2 );
+ }
+ if (!hrgnUpdate) DeleteObject( hrgn );
+ DeleteObject( hrgn2 );
+ }
+ return TRUE;
+}
+
+/*************************************************************************
* ScrollDC (USER32.@)
*
* Only the hrgnUpdate is return in device coordinate.
* rcUpdate must be returned in logical coordinate to comply with win API.
+ * FIXME: the doc explicitly states the opposite, to be checked
*
*/
BOOL WINAPI ScrollDC( HDC hdc, INT dx, INT dy, const RECT *rc,
- const RECT *prLClip, HRGN hrgnUpdate,
- LPRECT rcUpdate )
+ const RECT *clipRect, HRGN hrgnUpdate, LPRECT rcUpdate )
{
+ TRACE( "%04x %d,%d hrgnUpdate=%04x rcUpdate = %p\n", hdc, dx, dy, hrgnUpdate, rcUpdate );
+
+ if (clipRect) TRACE( "cliprc = (%d,%d,%d,%d)\n",
+ clipRect->left, clipRect->top, clipRect->right, clipRect->bottom );
+
+ if (rc) TRACE( "rc = (%d,%d,%d,%d)\n", rc->left, rc->top, rc->right, rc->bottom );
+
if (USER_Driver.pScrollDC)
- return USER_Driver.pScrollDC( hdc, dx, dy, rc, prLClip, hrgnUpdate, rcUpdate );
- return FALSE;
+ return USER_Driver.pScrollDC( hdc, dx, dy, rc, clipRect, hrgnUpdate, rcUpdate );
+ else
+ return USER_ScrollDC( hdc, dx, dy, rc, clipRect, hrgnUpdate, rcUpdate );
+}
+
+/*************************************************************************
+ * USER_ScrollWindowEx [Internal]
+ *
+ * Note: contrary to what the doc says, pixels that are scrolled from the
+ * outside of clipRect to the inside are NOT painted.
+ *
+ * Parameter are the same as in ScrollWindowEx, with the additional
+ * requirement that rect and clipRect are _valid_ pointers, to
+ * rectangles _within_ the client are. Moreover, there is something
+ * to scroll.
+ */
+static INT USER_ScrollWindowEx( HWND hwnd, INT dx, INT dy,
+ const RECT *rect, const RECT *clipRect,
+ HRGN hrgnUpdate, LPRECT rcUpdate, UINT flags )
+{
+ INT retVal;
+ BOOL bOwnRgn = TRUE;
+ BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
+ HRGN hrgnClip = CreateRectRgnIndirect(clipRect);
+ HRGN hrgnTemp;
+ HDC hDC;
+
+ TRACE( "%04x, %d,%d hrgnUpdate=%04x rcUpdate = %p rect=(%d,%d-%d,%d) %04x\n",
+ hwnd, dx, dy, hrgnUpdate, rcUpdate,
+ rect->left, rect->top, rect->right, rect->bottom, flags );
+ TRACE( "clipRect = (%d,%d,%d,%d)\n",
+ clipRect->left, clipRect->top, clipRect->right, clipRect->bottom );
+
+ if( hrgnUpdate ) bOwnRgn = FALSE;
+ else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
+
+ hDC = GetDCEx( hwnd, 0, DCX_CACHE | DCX_USESTYLE );
+ if (hDC)
+ {
+ HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
+ USER_Driver.pStartGraphicsExposures( hDC );
+ ScrollDC( hDC, dx, dy, rect, clipRect, hrgnUpdate, rcUpdate );
+ USER_Driver.pEndGraphicsExposures( hDC, hrgn );
+ ReleaseDC( hwnd, hDC );
+ if (bUpdate) CombineRgn( hrgnUpdate, hrgnUpdate, hrgn, RGN_OR );
+ else RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_ERASE );
+ DeleteObject( hrgn );
+ }
+
+ /* Take into account the fact that some damages may have occured during the scroll */
+ hrgnTemp = CreateRectRgn( 0, 0, 0, 0 );
+ retVal = GetUpdateRgn( hwnd, hrgnTemp, FALSE );
+ if (retVal != NULLREGION)
+ {
+ OffsetRgn( hrgnTemp, dx, dy );
+ CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
+ RedrawWindow( hwnd, NULL, hrgnTemp, RDW_INVALIDATE | RDW_ERASE );
+ }
+ DeleteObject( hrgnTemp );
+
+ if( flags & SW_SCROLLCHILDREN )
+ {
+ HWND *list = WIN_ListChildren( hwnd );
+ if (list)
+ {
+ int i;
+ RECT r, dummy;
+ for (i = 0; list[i]; i++)
+ {
+ GetWindowRect( list[i], &r );
+ MapWindowPoints( 0, hwnd, (POINT *)&r, 2 );
+ if (!rect || IntersectRect(&dummy, &r, rect))
+ SetWindowPos( list[i], 0, r.left + dx, r.top + dy, 0, 0,
+ SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE |
+ SWP_NOREDRAW | SWP_DEFERERASE );
+ }
+ HeapFree( GetProcessHeap(), 0, list );
+ }
+ }
+
+ if( flags & (SW_INVALIDATE | SW_ERASE) )
+ RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE |
+ ((flags & SW_ERASE) ? RDW_ERASENOW : 0) |
+ ((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ) );
+
+ if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
+ DeleteObject( hrgnClip );
+
+ return retVal;
}
@@ -142,7 +301,8 @@
result = USER_Driver.pScrollWindowEx( hwnd, dx, dy, &rc, &cliprc,
hrgnUpdate, rcUpdate, flags );
else
- result = ERROR; /* FIXME: we should have a fallback implementation */
+ result = USER_ScrollWindowEx( hwnd, dx, dy, &rc, &cliprc,
+ hrgnUpdate, rcUpdate, flags );
if( hwndCaret )
{
@@ -155,3 +315,4 @@
return result;
}
+
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